Results 71 to 80 of about 1,048 (180)
Tongxin xuebao, 2022 To meet the requirements of intelligent signal processing and physical layer security, aiming at the shortage of spectrum resources, a resource allocation algorithm for reconfigurable intelligent surface (RIS)-assisted the device to device (D2D ...
Zhengyu ZHU +5 more
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Defensive Reconfigurable Intelligent Surface (D-RIS) Based on Non-Reciprocal Channel Links
IEEE Transactions on Communications14 pages, journal ...
Kun Chen-Hu, Petar Popovski
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The Deep Deterministic Policy Gradient Algorithm Based on RIS Technology in a Coal Mine Tunnel
Applied SciencesReconfigurable Intelligent Surface (RIS) technology relies on its reconfigurable electromagnetic properties and offers an efficient solution for enhancing signal quality in coal mine communications.
Shuqi Wang +3 more
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Power Allocation and RIS Elements Optimisation for Reconfigurable Intelligent Surfaces assisted RSMA
This paper proposes power allocation and the number of reconfigurable intelligent surfaces (RIS) elements optimisation in a RIS-assisted rate splitting multiple access (RSMA) system. The optimised RIS-RSMA (ORIS-RSMA) method determines the optimal number of RIS elements and the power allocation factors for both common and private parts of a message ...
Qayyum, Abdullah, Nekovee, Maziar
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Performance Analysis of RIS-Assisted Communication With Direct Link: A New Copula Application
IEEE Open Journal of the Communications SocietyReconfigurable intelligent surface (RIS) has received remarkable attention as a promising solution to enhance the capacity and coverage of wireless cellular networks. In this paper, we evaluate the performance of RIS-assisted communication systems in the
Damoon Shahbaztabar +3 more
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, 2023 <p>The material is dedicated to various aspects of graphene metasurface implementation of the Reconfigurable Intelligent Surface (RIS) in the framework of the incoherent paradigm for NOMA-RIS-MIMO transmission design. Digital coded model of the metasurface is considered in the framework of the general representation of the graphene metasurface as
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Dianxin kexueIn order to solve the problems of large energy consumption, and poor performance gain of RIS in the traditional reconfigurable intelligent surface (RIS)-assisted integrated sensing and communication (ISAC) system, the sub-connected active reconfigurable ...
WU Xiangkai +4 more
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Saturation in Two-Timescale RIS Beamforming
IEEE Open Journal of the Communications SocietyThis paper investigates reconfigurable intelligent surface (RIS)-assisted wireless communications under a two-timescale architecture, in which the RIS phase shifts are optimized from long-term channel statistics, eliminating per-element training and ...
Masoud Sadeghian +2 more
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Secure Satellite Downlink With Hybrid RIS and AI-Based Optimization
IEEE AccessIn this paper, we explore a secure multiuser multiple-input single-output (MISO) satellite downlink communication system, enhanced by the integration of a hybrid reconfigurable intelligent surface (RIS).
Mian Muhammad Kamal +7 more
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EURASIP Journal on Wireless Communications and NetworkingSimultaneous transmission and reflection reconfigurable intelligent surface (Star-RIS) has been recently introduced as one of the hopeful technologies in future communications.
Seyedeh Reyhane Shahcheragh +1 more
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